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Groups > linux.kernel > #1220277
| From | Nicolas Pitre <nicolas.pitre@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB |
| Date | 2015-09-07 17:40 +0200 |
| Message-ID | <q66Gu-1eb-33@gated-at.bofh.it> (permalink) |
| References | <q4yQy-7Gl-29@gated-at.bofh.it> <q4A5X-YQ-11@gated-at.bofh.it> <q4NZf-3Zz-11@gated-at.bofh.it> <q635U-4u5-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, 7 Sep 2015, Arnd Bergmann wrote: > Given how much more common 1GB hardware configurations are compared to 768MB > configuration, we could however think about adding a VMSPLIT_3G_OPT option > that x86 has (also VMSPLIT_2_75G on ARCH_TILE), to allow using the entire > 1GB of lowmem without going all the way to VMSPLIT_2G. That option would > also let us use the entire 768MB on the machines that Yongtaek Lee is > interested in. That's easy enough: diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0d1b717e1e..a63970f211 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1470,6 +1470,8 @@ choice config VMSPLIT_3G bool "3G/1G user/kernel split" + config VMSPLIT_3G_OPT + bool "3G/1G user/kernel split (for full 1G low memory)" config VMSPLIT_2G bool "2G/2G user/kernel split" config VMSPLIT_1G @@ -1481,6 +1483,7 @@ config PAGE_OFFSET default PHYS_OFFSET if !MMU default 0x40000000 if VMSPLIT_1G default 0x80000000 if VMSPLIT_2G + default 0xAF000000 if VMSPLIT_3G_OPT default 0xC0000000 config NR_CPUS That shifts the risk to user space though. But if there is a regression there, it will manifest itself on all systems and not only with some particular hardware. Nicolas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Yongtaek Lee <ytk.lee@samsung.com> - 2015-09-03 04:30 +0200
[PATCH] ARM: fix bug which lowmem size is limited to 760MB Yongtaek Lee <ytk.lee@samsung.com> - 2015-09-03 07:20 +0200
Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-03 10:10 +0200
Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Yongtaek Lee <ytk.lee@samsung.com> - 2015-09-03 10:30 +0200
Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Lucas Stach <l.stach@pengutronix.de> - 2015-09-03 10:40 +0200
Re: Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Yongtaek Lee <ytk.lee@samsung.com> - 2015-09-03 10:50 +0200
Re: Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-03 11:20 +0200
[PATCH] ARM: fix bug which lowmem size is limited to 760MB Yongtaek Lee <ytk.lee@samsung.com> - 2015-09-03 12:40 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-04 03:30 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Arnd Bergmann <arnd@arndb.de> - 2015-09-07 13:50 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-07 17:40 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-07 17:50 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Arnd Bergmann <arnd@arndb.de> - 2015-09-07 17:50 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-07 21:50 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-08 02:20 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-08 04:10 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-08 10:10 +0200
Re: [PATCH] ARM: fix bug which lowmem size is limited to 760MB Nicolas Pitre <nicolas.pitre@linaro.org> - 2015-09-08 17:00 +0200
Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than 0xf0000000 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-03 11:10 +0200
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